Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 10 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/18/2020   10:49:07   (   0.03,-137.21) (   0.54,-139.50)  260.75                80
 10/19/2020   10:32:51   (   0.03,-137.21) (  -0.49,-134.92)  261.12                80
 10/20/2020   22:51:49   (  -0.03,-137.19) (  -0.69,-140.14)  336.10                80
 10/21/2020   22:35:33   (  -0.03,-137.18) (   0.34,-135.56)  185.30                80
 10/23/2020   10:54:22   (   0.02,-137.17) (   0.79,-140.75)  407.07                80
 10/24/2020   10:38:04   (   0.02,-137.16) (  -0.18,-136.16)  114.12                80
 10/25/2020   22:57:03   (  -0.01,-137.14) (  -0.99,-141.38)  483.85                80
 10/26/2020   22:40:46   (  -0.01,-137.13) (   0.04,-136.80)   37.31                80
 10/29/2020   10:40:39   (   0.01,-137.11) (   0.07,-137.41)   34.59                80
 10/30/2020   10:24:23   (   0.01,-137.09) (  -0.97,-132.83)  486.20                80